Brake-shoe.



PATENTED APR. 11, 1905.

Ow 7 O 7 00 F. P. COLLIER.

BRAKE SHOE.

APPLIOATION TILED FEB. s, 1905.

I 23/67" 71' zlwlz UNTTEE STATES FRANK P. COLLIER, OF

Patented April 11, 1905.

ll" 1 LM ET'llC, ILLINOIS.

BRAKE-SHOE.

SPECIFICATION forming part of Letters Patent No. 787,079, dated April11, 1905.

Application filed February 6 In /I// who/)1 11m wit/Writ.-

le it known that l, FHANKP.UOI.LI1G1Z,:1 citizen ot' the UnitedStates,residingat\Vilmette, l in the county of Cook and State of Illinois, haveinvented new and useful Improvements l in Brake-Slums, of which thefollowing is a specification.

The object of this invention is to strengthen the back and attaching-lugof a brake-shoe and to accomplish this result inexpensively and in asimple manner.

With these and other ends in view the invention comprises the novelfeatures hereinafter described, reference being had to the accompanyingdrawings, showing how the invention can be embodied with a brake-shoe,and in which Figure 1 is a perspective view of the strengthenlug-plates.Fig. 2 isa longitudinal sectional view of a solid cast-iron shoe emlbodying the invention. Fig. 3 is a longitudinal sectional view of acomposite shoe embodying the invention. Fig. Tis a transverse l l l l lsectional view on the line & i of Fig. 3.

l employ two plates 5, which are cut and stamped at their inner ends toform the upwardly-projecting,vokes 6 and the forwardlyprojecting lips T.The body 8 of the shoe is cast upon these plates in the usual form andmanner, and the plates will be located on the back of the shoe andembedded in the end lugs l) and located beneath the brake-head guidesh). The body of the attaching-lug 11 is cast with the body of the shoein the usual form l and manner and the yokes will lie snugly" againstthe sides of the lug and the openings l 12 therein will aline with theopening 13 in l the cast portion 11 of the attaching-lug. The I plateswill be exposed at the back of the shoe 1 for the major part of theirlength, and their 1 edges It are dovetailed, so that the body metal willform a locking engagement therey with. i may omit the cast body 11 anduse l the yokes alone for the attachingdug.

It is apparent that the invention can beembodied in a solid cast-ironbrake-shoe, as shown in Figs. 1 and orin a composite brake-shoe, and itis wholly immaterial whether the composite shoe is made with awearing-shrface composed of two separate and distinct metals l ncath theattaching-lug.

, 1905. Serial No. 244,387.

like an ordinary insert-shoe or whether sections of the wearing-surfaceare treated by chilling or otherwise to provide a wearingface of thecomposite character. I would therefore have it understood that I: mayemploy my invention in solid and composite car and locomotive shoes ofall the various types, sizes, and forms.

In Figs. 3 and -t l have shown one manner of embodying the invention ina composite shoe, and referring particularly thereto it will be observedthat lugs 15 are cut and stamped down from the plates and support andcarry the insert-blocks us, which are cast or otherwise attixed to saidlugs. The insert-blocks are preferably arranged so that they willcompletely plug the openings 17 left in the plates by stamping down thelugs. The lugs are preferably dovetailed at their side edges to hold theinserts; but they may be twisted for this purpose, and the inserts aredovetailed to form a locking connection with the body of the shoe. inthis way 1 utilize the two plates for the double purpose ofstrengthening the shoe and attaching-lug and also for carrying theinserhbloeks, and this enables the utilization of the insert-blocks foreffecting a locking engagement of the body therewith.

I, may dispense with the lips T, as shown in Fig. 3: but when these lipsare used they may be located slightly separate from each other ortouching each other, and in either case they will be locked rigidly bythe cast-iron of the body of the shoe and strengthen the body be- I, mayalso cutout the outer ends of the plates at 18, and other changes in thedetails may be made without (.leparting from the spirit or sacrilicingthe scope of the invention. These plates thus form an imperforate backfor the body of the shoe and operate to strengthen the shoe and serve tohold together the parts of the body in case of fracture. The yoked endsof the plates protect the cast-iron body of the attaching-lug, andthereby strengthen it and prevent it from being accidentally broken inhandling as well as in use. The cast iron body of the attaching-lug maytherefore be made considerably smaller than has heretofore been 100customary for attaching-lugs because of the additional strengthfurnished by the yoked ends of the plates. These ends of the plates lieagainst the sides of the attaching-lug and have a bearing thereon, aswill be readily understood from the drawings.

\Vithout limiting myself to the exact construction and arrangement ofparts herein shown and described, what I claim, and desire to secure byLetters Patent, is

1. A brake-shoe having an attaching-lug and plates at the back of theshoe between said ing and each end of the shoe.

2. A brake-shoe having an attaching-lug, and plates at the back of theshoe between said lug and each end of the shoe, said plates having theirinner ends turned up at the sides of the attaching-lug and provided withopenings to aline with the opening in said lug.

3. A brake-shoe having an attaching-lug, and plates locked to the backof the shoe on each side of the attaching-lug and having a bearing atone end against the adjacent side of said lug.

A. A brakeshoe having one plate locked thereto at each side of itscenter, the inner ends of said plates being bent upward and providedwith openings to receive a fasteningkey.

5. A brake-shoe having plates locked thereto at each side of its center,the inner ends of said plates being provided with upwardly-extendingyokes and forwardly-projecting lips.

6. A brake-shoe having plates locked thereto at each side of its center,the inner ends of said plates being provided with upwardly-extendingyokes and forwardly-projecting lips, and an attaching-lug cast with thebody of the shoe between said yokes.

7 A brake-shoe having plates locked there- .to at each side of itscenter, the inner ends of said plates being bent upward and providedwith openings to receive a fastening-key, and inserts locked to saidplates.

8. A brake-shoe having plates locked thereto at each side of its center,the inner ends of said plates being bent upward and provided withopenings to receive a fastening-key, lugs on the under side of saidplates, and inserts locked to said lugs.

9. A brake-shoe having plates locked thereto at each side of its center,the inner ends of said plates being bent upward and provided withopenings to receive a fastening-key, lugs on said plates, and insertscarried by said lugs, said inserts having a locking connection with thelugs and a locking connection with the body of the shoe.

FRANK P. COLLIER. Vvitncsses:

WM. 0. BELT, M. A. KIDDIE.

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